Tire tread and buttress



FIG. 1 is a front elevation view of a tire tread and buttress showing our new design, it being understood that the pattern is repeated uniformly throughout the circumference of the tread and buttress;

FIG. 2 is an enlarged fragmentary front elevational view thereof;

FIG. 3 is a first perspective view thereof;

FIG. 4 is an enlarged fragmentary elevational view of one side thereof;

FIG. 5 is a second perspective view thereof; and,

FIG. 6 is an enlarged fragmentary elevation view of the opposite side thereof.

The broken line showing of environmental structure in FIGS. 3, 4, 5 and 6 of the drawings is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a tire tread and buttress, as shown and described. 